Solis S5-GR3P4K Three-Phase Inverter 4 kW

The Solis S5-GR3P4K is a three-phase grid-tied inverter designed for residential and small commercial photovoltaic systems. It delivers a rated output power of 4 kW with a maximum efficiency of 98.5% and supports a recommended maximum PV power of 6 kW. The inverter features two independent MPPT trackers with a wide operating voltage range (160–1000 V) and a low startup voltage of 180 V.

Key safety and smart features include integrated AFCI (arc-fault circuit protection) to reduce fire risk, automatic voltage stabilization for weak grid conditions, and support for remote monitoring via RS485, WiFi, and GPRS connectivity through SolisCloud. The IP66-rated unit operates in ambient temperatures from −25 to +60 °C and employs a transformerless topology with natural convection cooling.

The inverter is certified to major European grid standards (G98/G99, VDE-AR-N 4105, EN 50549-1) and international safety standards (IEC/EN 62109, IEC/EN 61000). It includes an LCD display and optional integrated DC switch, and comes with a 10-year manufacturer's warranty.